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# PRACTICAL PERIPHERALS, INC.
PC288HC V.FC
Card Type Fax, Modem (asynchronous)
Chip Set Unidentified
Maximum Data Rate 28.8Kbps
Maximum Fax Rate 14.4Kbps
Data Bus 8-bit ISA
Fax Class Class I & II
Data Modulation Bell 103/212A
Protocol
ITU-T V.21, V.22, V.22bis, V.23, V.32,
V.32bis, V.34
Rockwell V.FC
Fax Modulation ITU-T V.17, V.21CH2, V.27ter, V.29
Protocol
Error MNP5, V.42bis
Correction/Compression
(IMG) IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Function | Label | Function | Label |
|------------------------------------------------------------|
| Line out | CN1 | Line in | CN2 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SERIAL PORT ADDRESS |
|------------------------------------------------------------|
| Setting | SW1/A | SW1/B |
|--------------------+-------------------+-------------------|
| COM1 (3F8h) | On | On |
|--------------------+-------------------+-------------------|
| í COM2 (2F8h) | On | Off |
|--------------------+-------------------+-------------------|
| COM3 (3E8h) | Off | On |
|--------------------+-------------------+-------------------|
| COM4 (2E8h) | Off | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| INTERRUPT |
|------------------------------------------------------------|
| Setting | JP1/A | JP1/B | JP1/C |
|---------------+--------------+--------------+--------------|
| 2 | Open | Closed | Open |
|---------------+--------------+--------------+--------------|
| í 3 | Closed | Open | Open |
|---------------+--------------+--------------+--------------|
| 4 | Closed | Open | Open |
|---------------+--------------+--------------+--------------|
| 5 | Open | Open | Closed |
+------------------------------------------------------------+
Proprietary AT Command Set
+------------------------------------------------------------+
| SLEEP TIMER |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format | AT [cmds] S24=n [cmds] |
|--------------+---------------------------------------------|
| Default: | 0 |
|--------------+---------------------------------------------|
| Range: | 0-255 |
|--------------+---------------------------------------------|
| Unit: | 1 second |
|--------------+---------------------------------------------|
| Description: | Maximum duration of DTE and DCE inactivity |
| | allowed prior to initiating low-power sleep |
| | mode. |
|--------------+---------------------------------------------|
| Note: | ATS24=0 will disable timer |
+------------------------------------------------------------+
+------------------------------------------------------------+
| INACTIVITY TIMER |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format | AT [cmds] S30=n [cmds] |
|--------------+---------------------------------------------|
| Default: | 0 |
|--------------+---------------------------------------------|
| Range: | 0-255 |
|--------------+---------------------------------------------|
| Unit: | 10 seconds |
|--------------+---------------------------------------------|
| Description: | Maximum duration of DTE and DCE inactivity |
| | allowed prior to initiating hang-up |
| | process. |
|--------------+---------------------------------------------|
| Note: | ATS30=0 will disable timer |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIAL |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] D<#> [cmds] |
|--------------+---------------------------------------------|
| Description: | Dials telephone number according to any |
| | modifiers included in the string |
|--------------+---------------------------------------------|
| Note: | Any combination of modifiers can be used to |
| | produce the desired dial functions in |
| | sequence. |
|--------------+---------------------------------------------|
| Modifier | Function |
|--------------+---------------------------------------------|
| L | Re-dial last number |
|--------------+---------------------------------------------|
| P | Pulse dialing enabled |
|--------------+---------------------------------------------|
| R | Answer mode enabled, originate mode |
| | disabled following handshake initiation |
|--------------+---------------------------------------------|
| S=n | Dial stored telephone number n |
|--------------+---------------------------------------------|
| T | Tone dialing enabled |
|--------------+---------------------------------------------|
| W | Dialing resumed following dial tone |
| | detection |
|--------------+---------------------------------------------|
| , | Dialing paused for amount of time specified |
| | in S8 register |
|--------------+---------------------------------------------|
| " | Letters enclosed in quotes are interpreted |
| | as numbers according to the telephone |
| | keypad |
|--------------+---------------------------------------------|
| ! | Modem commanded to go off-hook for |
| | specified time before returning on-hook |
|--------------+---------------------------------------------|
| @ | Wait for quiet answer |
|--------------+---------------------------------------------|
| $ | Waits for prompt tone for amount of time |
| | specified by the S7 register |
|--------------+---------------------------------------------|
| ; | Modem returned to command state after |
| | dialing |
+------------------------------------------------------------+
+------------------------------------------------------------+
| REPORT INFORMATION |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] In [cmds] |
|--------------+---------------------------------------------|
| Description: | Displays information requested |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| I0 | Reports product code |
|--------------+---------------------------------------------|
| I1 | Reports ROM checksum |
|--------------+---------------------------------------------|
| I2 | Tests and reports ROM checksum |
|--------------+---------------------------------------------|
| I3 | Reports firmware revision |
|--------------+---------------------------------------------|
| I4 | Returns numbers in bit-map format on |
| | software capabilities of the modem |
|--------------+---------------------------------------------|
| I6 | Reports data connection information |
+------------------------------------------------------------+
+------------------------------------------------------------+
| HELP SCREENS |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] $H [cmds] |
|--------------+---------------------------------------------|
| Description: | Display help screens. To page forward use |
| | <space bar>, and to exit use <ESC> |
+------------------------------------------------------------+
+------------------------------------------------------------+
| COMPRESSION |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] %Cn [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects data compression |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| %C0 | Data compression disabled |
|--------------+---------------------------------------------|
| %C1 | MNP5 enabled |
|--------------+---------------------------------------------|
| %C2 | V.42bis enabled |
|--------------+---------------------------------------------|
| í %C3 | MNP5 and V.42bis enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CLOCK DOUBLER |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] %BAUDn [cmds] |
|--------------+---------------------------------------------|
| Description: | Controls clock doubler at the UART |
|------------------------------------------------------------|
| Command | Function |
|---------------+--------------------------------------------|
| %BAUD? | Reports current clock doubler setting |
|---------------+--------------------------------------------|
| %BAUD=? | Reports available clock doubler modes |
|---------------+--------------------------------------------|
| %BAUD0 | Standard UART speed / clock doubler |
| | disabled |
|---------------+--------------------------------------------|
| %BAUD1 | Double specified UART speed clock doubler |
| | enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CALLER ID |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] %CCID=n [cmds] |
|--------------+---------------------------------------------|
| Description: | Controls the Caller ID function |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| %CCID=0 | Caller ID disabled |
|--------------+---------------------------------------------|
| %CCID=1 | Caller ID displays formatted data |
|--------------+---------------------------------------------|
| %CCID=2 | Caller ID displays raw hexadecimal data |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DUMB MODE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] %DUMBn [cmds] |
|--------------+---------------------------------------------|
| Description: | Controls command recognition and result |
| | codes, dumb mode |
|------------------------------------------------------------|
| Command | Function |
|-------------------------+----------------------------------|
| í %DUMB0 | Dumb mode disabled |
|-------------------------+----------------------------------|
| %DUMB1 | Dumb mode enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| AUTO-RETRAIN - AUTO-FALLBACK/FALL-FORWARD |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] %En [cmds] |
|--------------+---------------------------------------------|
| Description: | Controls auto-retrain mode and |
| | fallback/fall-forward |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| í %E0 | Auto-retrain disabled |
|--------------+---------------------------------------------|
| %E1 | Auto-retrain enabled |
|--------------+---------------------------------------------|
| %E2 | Auto-fallback/fall-forward enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| LINE SIGNAL LEVEL |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] %L [cmds] |
|--------------+---------------------------------------------|
| Description: | Returns a value which indicates the |
| | received line signal level |
+------------------------------------------------------------+
+------------------------------------------------------------+
| LINE SIGNAL QUALITY |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] %Q [cmds] |
|--------------+---------------------------------------------|
| Description: | Returns a value which indicates line signal |
| | quality (-dBm) |
+------------------------------------------------------------+
+------------------------------------------------------------+
| MAXIMUM BLOCK SIZE FOR TRANSMISSION |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \An [cmds] |
|--------------+---------------------------------------------|
| Description: | Sets the maximum transmittable block size |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| \A0 | MNP block size is 64 characters |
|--------------+---------------------------------------------|
| í \A1 | MNP block size is 128 characters |
|--------------+---------------------------------------------|
| \A2 | MNP block size is 192 characters |
|--------------+---------------------------------------------|
| \A3 | MNP block size is 256 characters |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BREAK SEND |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Bn [cmds] |
|--------------+---------------------------------------------|
| Default: | 3 |
|--------------+---------------------------------------------|
| Range: | 1-9 |
|--------------+---------------------------------------------|
| Unit: | .1 second |
|--------------+---------------------------------------------|
| Description: | Sends break to modem |
+------------------------------------------------------------+
+------------------------------------------------------------+
| AUTO-RELIABLE TIME BUFFER CONFIGURATION |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Cn [cmds] |
|--------------+---------------------------------------------|
| Description: | Controls the handling of incoming data |
| | during auto-reliable time period |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| í \C0 | Data is discarded |
|--------------+---------------------------------------------|
| \C1 | Data is buffered |
|--------------+---------------------------------------------|
| \C2 | Data is discarded; modem returns to normal |
| | mode on receiving auto-reliable fallback |
| | character. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| ECHO DATA |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \En [cmds] |
|--------------+---------------------------------------------|
| Description: | Enables modem to echo received data |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| \E0 | Data echo disabled |
|--------------+---------------------------------------------|
| í \E1 | Data echo enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FLOW CONTROL |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Gn [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects modem port flow control |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| í \G0 | Flow control disabled |
|--------------+---------------------------------------------|
| \G1 | Flow control enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| LOCK SERIAL PORT |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Jn [cmds] |
|--------------+---------------------------------------------|
| Description: | Sets operation of serial port speed |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| í \J0 | Serial speed locked |
|--------------+---------------------------------------------|
| \J1 | Serial speed follows connect speed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BREAK TYPE |
|------------------------------------------------------------|
| Type: | Configuration |
|---------------------+--------------------------------------|
| Format: | AT [cmds] \Kn [cmds] |
|---------------------+--------------------------------------|
| Description: | Configures action of break signal |
|------------------------------------------------------------|
| Command | Break from | Modem receives | Break received |
| | DTE | \B | from remote |
| | | | modem |
|-----------+--------------+----------------+----------------|
| \K0 | Online | Break sent to | Buffers |
| | command mode | remote modem | cleared, break |
| | enabled, | and buffered | sent to DTE |
| | send no | cleared | |
| | break to | | |
| | remote modem | | |
|-----------+--------------+----------------+----------------|
| \K1 | Break sent | Break sent to | Buffers |
| | to remote | remote modem | cleared, break |
| | modem and | and buffered | sent to DTE |
| | buffered | cleared | |
| | cleared | | |
|-----------+--------------+----------------+----------------|
| \K2 | Online | Send break to | Break sent |
| | command mode | remote modem | immediately to |
| | enabled, | immediately | DTE |
| | send no | | |
| | break to | | |
| | remote modem | | |
|-----------+--------------+----------------+----------------|
| \K3 | Send break | Send break to | Break sent |
| | to remote | remote modem | immediately to |
| | modem | immediately | DTE |
| | immediately | | |
|-----------+--------------+----------------+----------------|
| \K4 | Online | Send break | Break sent |
| | command mode | with | with received |
| | enabled, | transmitted | data to the |
| | send no | data | DTE |
| | break to | | |
| | remote modem | | |
|-----------+--------------+----------------+----------------|
| í \K5 | Send break | Send break | Break sent |
| | with | with | with received |
| | transmitted | transmitted | data to the |
| | data | data | DTE |
+------------------------------------------------------------+
+------------------------------------------------------------+
| MNP - STREAM/BLOCK MODE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Ln [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects the transfer mode for MNP link |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| í \L0 | Stream mode for MNP enabled |
|--------------+---------------------------------------------|
| \L1 | Block mode for MNP enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CONNECT MODE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Nn [cmds] |
|--------------+---------------------------------------------|
| Description: | Controls the type of connection the modem |
| | will operate in |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| \N0 | Normal mode enabled |
|--------------+---------------------------------------------|
| \N1 | Direct mode enabled |
|--------------+---------------------------------------------|
| \N2 | Reliable mode enabled |
|--------------+---------------------------------------------|
| \N3 | Auto-reliable mode enabled |
|--------------+---------------------------------------------|
| \N4 | V.42 reliable mode enabled |
|--------------+---------------------------------------------|
| \N5 | MNP reliable mode enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FLOW CONTROL TYPE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Qn [cmds] |
|--------------+---------------------------------------------|
| Description: | Sets type of flow control used by modem |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| í \Q0 | Flow control disabled |
|--------------+---------------------------------------------|
| \Q1 | XON/XOFF flow control enabled |
|--------------+---------------------------------------------|
| \Q2 | CTS flow control by DCE enabled |
|--------------+---------------------------------------------|
| \Q3 | RTS/CTS flow control enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CURRENT CONFIGURATION |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \S [cmds] |
|--------------+---------------------------------------------|
| Description: | Displays current operating parameters |
+------------------------------------------------------------+
+------------------------------------------------------------+
| INACTIVITY TIMER |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Tn [cmds] |
|--------------+---------------------------------------------|
| Default: | 0 |
|--------------+---------------------------------------------|
| Range: | 0-90 |
|--------------+---------------------------------------------|
| Unit: | 1 minute |
|--------------+---------------------------------------------|
| Description: | Sets the length of time that the modem does |
| | not receive information before it |
| | disconnects. |
|--------------+---------------------------------------------|
| Note: | AT\T0 will disable timer |
+------------------------------------------------------------+
+------------------------------------------------------------+
| EXTENDED RESULT CODES - MNP |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Vn [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects extended result codes (MNP) |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| \V0 | Extended result codes disabled |
|--------------+---------------------------------------------|
| í \V1 | Extended result codes enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| XON/XOFF PASS-THROUGH |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Xn [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects whether XON/XOFF signals are sent |
| | to remote modem |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| í \X0 | XON/XOFF signals trapped by local modem |
|--------------+---------------------------------------------|
| \X1 | XON/XOFF passed through local modem |
+------------------------------------------------------------+